The flammable limits of an atmosphere are the:
Direct Answer
Option A: Upper and lower percentage of vapor concentrations in an atmosphere which will burn if an ignition source is present
Flammable limits define the range of concentrations of a flammable gas or vapor in air that will burn or explode when an ignition source is present. The lower flammable limit (LFL) is the minimum concentration, and the upper flammable limit (UFL) is the maximum concentration.
All Options
Detailed Explanation & Context
Flammable limits define the range of concentrations of a flammable gas or vapor in air that will burn or explode when an ignition source is present. The lower flammable limit (LFL) is the minimum concentration, and the upper flammable limit (UFL) is the maximum concentration.
Relevant Framework: STCW 2010 Manila Amendments • DG Shipping E-Learning & Exit Exam Standards • Advanced Fire Fighting (AFF).
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